Customary System

The customary system is used in Ameica and a few other countries.

Length

An inch is about as long as the tip of your thumb to the joint.

A foot is about the length of your wrist to the inside of your elbow.

A yard is about the length from your finger to your nose when your arm is streched out.

A mile is about the length of 10 blocks on your street.

Capacity

An ounce is about 2 spoonfulls of water.

A cup is abot the size of a mini can of soda.
A pint is about the size of the milk cartons you get at school.
A quart is about the size of an orange juice container.
A gallon is about the size of the plastic milk jugs at grocery stores.

Weight

An ounce is about the weight of a pencil.
A pound is about the weight of a large notebook.
A ton is about the weight of a small car.

Above is a one ton truck.

Here is a customary length conversion chart

Here is a customary weight conversion chart

Here is a customary capacity conversion chart